Hair brush



FIG. 1. is a perspective view of a hair brush showing my new design thereof;

FIG. 2. is a front view thereof;

FIG. 3. is a rear view thereof;

FIG. 4. is a left side view thereof;

FIG. 5. is a right side view thereof;

FIG. 6. is a top plan view thereof;

FIG. 7. is a bottom plan view thereof;

FIG. 8. is an enlarged partial perspective view showing the details of the brush bristles thereof; and,

FIG. 9. is another perspective view thereof.

The broken lines illustrate portions of the hair brush that form no part of the claimed design. 

CLAIM The ornamental design for a hair brush, as shown. 